Thank you for your help.
I fixed the problem and now I can view the web pages through Dreamweaver CS3 except the Flash files(swf). I had not understood the Defining a new Dynamic Site in Dreamweaver. So if I understood well if I have to add eCart or Dynamic pages in the future client website, I have to create each time a new site in localrootfolder for different website. Is it correct?
Regarding the Flash Files, they are located in the same folder than the html pages and there is no problem with them because I have tested them separately with Flash player and through the Browser Fire Fox and they work fine.They play also in Dreamweaver CS3 in Design view but as soon as I preview them in FireFox through Dreemweaver CS3 they do not play!weird.
I would appreciate it for any assistance.